A biomechanical study of the human vertebral artery with implications for fatal arterial injury

We studied the biomechanical behaviour of ring and strip specimens from along the length of 18 vertebral arteries taken from 16 subjects aged 28-90 years, in order to consider some of the factors which may play a role in vertebral artery rupture. The method was chosen to allow a comparison between circumferential distension (ring samples) and longitudinal extension, (strip samples). The samples were extended between the jaws of a tensile testing apparatus until the specimen broke and a number of biomechanical parameters were derived. These were the percentage extension to break, the tensile strength, Young's modulus and the peak load. There were a number of important findings. The vertebral artery was shown to be susceptible to longitudinal stretching with a number of strip samples breaking when extended by as little as 16-20%. The tensile strength and load at peak of the strip specimens were correspondingly lower than for the ring samples. Marked intersubject variations were shown for all these parameters and prominent changes in behaviour occurred along the vertebral artery. This study indicates that the artery may be susceptible to head and neck movements which cause the vessel to stretch, and intersubject variations in behaviour may be one important explanation for the marked differences in outcome which appear to exist in subjects who suffer broadly similar head and neck insults.     

Severity of neurocognitive impairment in women who have experienced intimate partner violence in Spain

This study examines neuropsychological impairment in women who have experienced intimate partner violence using DSM 5 criteria for mild and severe cognitive impairment. A total of 108 females in Spain were included in one of three groups: psychological abuse (n = 24), physical and psychological abuse (n = 45), and no-abuse (n = 39). There were differences between the control and IPV groups in attention and executive functioning. Furthermore, approximately 25% of women experiencing IPV suffer mild neuropsychological alterations and 5% severe, mostly in memory and executive function domains. This evidence supports the growth in research that suggests psychological violence on its own to be as strongly related to poor health outcomes as physical violence in intimate partner relationships.     

Guiding Principles for Family Justice Programs

The Association of Family and Conciliation Courts and Relate, UK, co‐convened a 24‐hour consultation at St George's House, Windsor, UK, on modern family justice issues across Europe. This article identifies a preliminary set of guiding principles for family justice programs developed by consultation participants.     

Mortgages, seniors and the common law contractual doctrine of mental incapacity in Australia

Seniors in Australia are being called upon to mortgage their most precious economic asset, the family home. They may be asked to guarantee the liabilities of other family members by providing a mortgage-based guarantee or they may decide to enter into a reverse mortgage to supplement financially their savings and pensions. As the family home is the single most valuable asset for most older Australians, the creation of any obligations in regard to it ought to be undertaken with care and vigilance. While seniors are free to create mortgages, they may lack the capacity to understand the legal ramifications of these complex transactions or be unable to protect their interests when entering into them. It is not suggested that older Australians necessarily suffer a lack of contractual capacity. Many seniors are more than able to take care of their interests and assets. However, some seniors do suffer cognitive impairment which adversely affects their capacity to act in their best interests and to navigate the complexities of contractual relations. In contract and mortgage law, this raises the issue of mental incapacity.For centuries, the common law has recognized not only that mentally incapacitated people exist, but that they may enter into contracts such as mortgages and may later wish to have the mortgage set aside. The present formulation of the contractual doctrine of mental incapacity is the product of 19th century jurisprudence in which the courts framed the doctrine to accommodate commercial dealing rather than the interests of persons who lacked the necessary mental capacity. Accordingly, the doctrine has been very difficult to rely on successfully when challenging mortgages made by persons lacking capacity. Therefore, Australian litigators and courts alike have sought to deal with mental incapacity issues in the contractual context by using and modifying other doctrines (such as non est factum, undue influence and unconscionable dealing) in which the issue of capacity may be incorporated, but where mental incapacity need not be the sole or primary focus. While this had led to greater success for mortgagors, this has been at the expense of the common law doctrine. The article concludes by offering some suggestions as to how the doctrine may be modernized and mental capacity dealt with in a way both to empower competent seniors and protect those vulnerable seniors suffering cognitive impairment.     

Lawfulness of a randomised trial of the new community treatment order regime for England and Wales

This article debates and defends the lawfulness of a randomised controlled trial of compulsory outpatient treatment under the mental health legislation for England and Wales. The trial is designed to compare the outcomes for patients of their treatment under the new Community Treatment Order (CTO) regime with their treatment under the older leave scheme - the two main forms of compulsory care in the community now authorised by the revised Mental Health Act 1983. The methods for the trial involve the random allocation of some patients between the two schemes, when they are considered by their Responsible Clinicians to be eligible for some form of compulsory outpatient care. The main question we consider is the lawfulness of that aspect of the methods. Can a carefully selected group of patients be allocated at random between the two regimes to permit an evaluation to proceed? Or would that involve some departure from the decision-making criteria specified by law? We argue that a group of patients can be identified who meet - simultaneously - the tests for treatment under both the CTO and the leave schemes. Those patients could then be allocated lawfully to treatment under either scheme. This opens the door, we argue, to their random allocation between the two schemes for the purposes of the research. In reaching this conclusion, we explain the methods and aims of the trial and closely compare the respective features of the leave and CTO regimes.     

The role of teacher quality in retention and hiring: Using applications to transfer to uncover preferences of teachers and schools

Many large urban school districts are rethinking their personnel management strategies, often giving increased control to schools in the hiring of teachers, reducing, for example, the importance of seniority. If school hiring authorities are able to make good decisions about whom to hire, these reforms have the potential to benefit schools and students. Prior research on teacher transfers uses career history data, identifying the school in which a teacher teaches in each year. When such data are used to see which teachers transfer, it is unclear the extent to which the patterns are driven by teacher preferences or school preferences, because the matching of teachers to schools is a two‐sided choice. This study uses applications‐to‐transfer data to examine separately which teachers apply for transfer and which get hired and, in so doing, differentiates teacher from school preferences. Holding all else equal, we find that teachers with better pre‐service qualifications (certification exam scores, college competitiveness) are more likely to apply for transfer, while teachers whose students demonstrate higher achievement growth are less likely. On the other hand, schools prefer to hire “higher quality” teachers across measures that signal quality. The results suggest that not only do more effective teachers prefer to stay in their schools but that schools are able to identify and hire the best candidates when given the opportunity © 2010 by the Association for Public Policy Analysis and Management.     

Mergers and difference-in-difference estimator: Why firms do not increase prices?

Difference-in-difference methods are being increasingly used to analyze the impact of mergers on pricing and other market equilibrium outcomes. Using evidence from an exogenous merger between two retail gasoline companies in a specific market in Spain, this paper shows how concentration did not lead to a price increase. In fact, the conjectural variation model concludes that the existence of a collusive agreement before and after the merger accounts for this result, rather than the existence of efficient gains. This result may explain empirical evidence reported in the literature according to which mergers between firms do not have significant effects on prices.     

Becoming widowed

This article discusses the characteristics of widowhood in early 19th-century Austria, focusing on the sources of economic support. Higher proportions of the widowed population were found in inmate than in tenant households, and more women than men were widowed. Widows were more likely to live on their own than adults in general were, indicating that many widows could support their households from their own resources. For 40% of the widows, however, familial support was available in the form of a coresident extended household. Tenant households with greater resources at their disposal were better able to offer this form of support than inmate households. Less than 1% of tenant widows lived alone. Longitudinal data were analyzed to determine the relative frequency with which tenant and inmate widows succeeded their late husbands as household heads, remarried, or retired to become the mothers or mothers-in-law of the new household heads.     

Reflections on the implications of the Vietnam Caucus

Abstract

It is revealing that a Vietnam Caucus held in March 1968 should end its meeting by beginning an evaluation of the professional “conscience” of Asian scholars. That it took this war to raise the latent problems in the profession is itself a depressing commentary on the state of the field. But the desire on the part of some individuals to create a nationwide inter-university student-faculty Committee of Concerned Asian Scholars to pose and then seek to resolve these problems fulfills one of the organizers' hopes.